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Article: Determining fault slip distribution of the Chi-Chi Taiwan earthquake with GPS and InSAR data using triangular dislocation elements

TitleDetermining fault slip distribution of the Chi-Chi Taiwan earthquake with GPS and InSAR data using triangular dislocation elements
Authors
KeywordsInversion
InSAR
Chi-Chi
Fault slip
GPS
Issue Date2008
Citation
Journal of Geodynamics, 2008, v. 45, n. 4-5, p. 163-168 How to Cite?
AbstractThe reactivation of the Chelungpu fault triggered the 20 September 1999 Chi-Chi Taiwan earthquake (Mw = 7.6) which caused a 100-km long surface rupture that trends north-south. We reconstruct the fault geometry using 1068 planar triangular dislocation elements that approximate more realistically the curved three-dimensional fault surface. The fault slip distribution is then determined with the observed GPS coseismic displacements as well as interferometric synthetic aperture radar (InSAR) data. The results show that our smooth 3D fault slip model has improved the fit to the geodetic data by 44% compared with the previously published inversions. The slip distribution obtained both by inversion of GPS data only and by joint inversion of GPS and InSAR data indicates that notable slips occur on the sub-horizontal décollement at the depth of 6.1-8.9 km. © 2007 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/266879
ISSN
2023 Impact Factor: 2.1
2023 SCImago Journal Rankings: 0.751
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, L.-
dc.contributor.authorWu, J. C.-
dc.contributor.authorGe, L. L.-
dc.contributor.authorDing, X. L.-
dc.contributor.authorChen, Y. L.-
dc.date.accessioned2019-01-31T07:19:52Z-
dc.date.available2019-01-31T07:19:52Z-
dc.date.issued2008-
dc.identifier.citationJournal of Geodynamics, 2008, v. 45, n. 4-5, p. 163-168-
dc.identifier.issn0264-3707-
dc.identifier.urihttp://hdl.handle.net/10722/266879-
dc.description.abstractThe reactivation of the Chelungpu fault triggered the 20 September 1999 Chi-Chi Taiwan earthquake (Mw = 7.6) which caused a 100-km long surface rupture that trends north-south. We reconstruct the fault geometry using 1068 planar triangular dislocation elements that approximate more realistically the curved three-dimensional fault surface. The fault slip distribution is then determined with the observed GPS coseismic displacements as well as interferometric synthetic aperture radar (InSAR) data. The results show that our smooth 3D fault slip model has improved the fit to the geodetic data by 44% compared with the previously published inversions. The slip distribution obtained both by inversion of GPS data only and by joint inversion of GPS and InSAR data indicates that notable slips occur on the sub-horizontal décollement at the depth of 6.1-8.9 km. © 2007 Elsevier Ltd. All rights reserved.-
dc.languageeng-
dc.relation.ispartofJournal of Geodynamics-
dc.subjectInversion-
dc.subjectInSAR-
dc.subjectChi-Chi-
dc.subjectFault slip-
dc.subjectGPS-
dc.titleDetermining fault slip distribution of the Chi-Chi Taiwan earthquake with GPS and InSAR data using triangular dislocation elements-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jog.2007.10.003-
dc.identifier.scopuseid_2-s2.0-41449099927-
dc.identifier.volume45-
dc.identifier.issue4-5-
dc.identifier.spage163-
dc.identifier.epage168-
dc.identifier.isiWOS:000255672400001-
dc.identifier.issnl0264-3707-

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